If Tina, a $2-$year$-$old child from Toronto, shows noun bias, this would imply that

she will raise her voice more when she uses nouns rather than verbs.

she is abnormally delayed in her use of nouns.

more of the words she uses.will be nouns, rather than verbs.

she will be more likely to use nouns rather than adjectives$-$but only when she dislikes something.

she has a bias against using nouns, rather than verbs.